Also would like to get an alien to fill the gap between .5 C4 and .75 C4 - Which Alien should I get? and CCH, FIXE? which one? Im not too familiar with Aliens at all. Or should I go with a Totem Basic Alien?

old CCH is your only option for larger than a .5 C4. both Fixe and Totem only make up to a red alien size which is equivalent to a .5 C4. but CCH aliens larger than red are very floppy and therefore disliked by many

also, I find the totem basics to be a nicer, better built cam that the fixe if you decide to get any "aliens" in the red size or smaller

very well, In that case, which aliens should i get to replace or use instead off a .3 C4 and .4 C4? and use my smaller C4s as doubles to same size aliens... (for i know .3 and .4 C4s are not very popular)